MSS0271
Preliminary
MOSEL VITELIC INC.
Choice of sample rate
Cascading
The sample rate should be chosen before chip
manufactured. Two sample rates are provided on
S0271 - either 6200 KHz or 8400 KHz. User is able
to select them on the attached PRF (product request
form).
Cascading chips to have longer duration is possible by
special wiring but not recommended.
Paralleling
Paralleling chips to have more triggers is possible by
special wiring but not recommended.
Rosc
No external Rosc is required.
Bulk Capacitor
A bulk capacitor 0.1uF across the Vdd to Vss is
demanded when using 4.5V (or higher) working voltage.
At every working voltage, the value of bulk capacitor
should be less than or equal to 0.47uF.
Audio band amplifier transistor
No amplifier transistor is demanded.
PCB layout
To minimize the interference, the route from trigger
switch to chip should be as short as possible. The
route of trigger signal is recommended to as far away
as possible to speaker output.
Bonding change while Rosc shifts
MVI S0271 provides reliable built-in Rosc by advance
technology. In case Rosc is shilfted (pitch shifted), the
bonding change is able to bias Rosc into nominal value.
The bonding changes are described on page 11/12.
While the pitch shift encountered even it is rarely, the
part number will have a postfix letter-capital "Z" while
the lot number will have the two letter extension
simultaneously. The two-letter extension could be "LH",
"HL" or "HH". This two-letter extension tells how the
bonding should be done which are described on page
11/12.
CDS as trigger
to be defined.
Power On play
This chip provides power on play function. User
should be noted that the time parameter T PUD is
zero. To connect the trigger to Vdd, the sound will
be played whenever power is turned on.
Standard Code Line Up
Times to
SR
Times to
Title
Play
Code#
002
Repeat
Trigger
LB
Deb. (Hz)
Fast 6.2 K
Fast 6.2 K
Fast 8.4 K
Fast 8.4 K
Slow 6.2 K
Slow 6.2 K
Remarks
Ho,Ho,Ho, Merry X'mas!!
Happy Hollween!!
Barking Dog
1
2
3
1
3
2
1
2
3
4
5
6
0
1
2
0
2
1
Edge Unhold Irret. Busy
Edge Unhold Irret. Busy
Edge Unhold Irret. Busy
Edge Unhold Irret. 6 Hz LED
Edge Unhold Irret. 3 Hz LED
Level Unhold Irret. 3 Hz LED
010
017
Screaming Girl
Croaking Frog
Sound of Cow
018
020
021
Specifications subject to change without notice, contact your sales representatives for the most recent information.
PID257*** 05/97
5/12
MOSEL [ MOSEL VITELIC, CORP ]
